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Full Discussion: Wtmp empty everyday
Operating Systems AIX Wtmp empty everyday Post 302814123 by alister on Tuesday 28th of May 2013 06:29:22 PM
Old 05-28-2013
Quote:
Originally Posted by bakunin
Code:
cat /dev/null > /var/adm/wtmp

cat serves no purpose in that construct. The file is truncated by the shell when it handles the redirection operation, before invoking cat. The following should do it:
Code:
> /var/adm/wtmp

Regards,
Alister
 

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utmpx(4)							   File Formats 							  utmpx(4)

NAME
utmpx, wtmpx - utmpx and wtmpx database entry formats SYNOPSIS
#include <utmpx.h> /var/adm/utmpx /var/adm/wtmpx DESCRIPTION
The utmpx and wtmpx files are extended database files that have superseded the obsolete utmp and wtmp database files. The utmpx database contains user access and accounting information for commands such as who(1), write(1), and login(1). The wtmpx database contains the history of user access and accounting information for the utmpx database. USAGE
Applications should not access these databases directly, but should use the functions described on the getutxent(3C) manual page to inter- act with the utmpx and wtmpx databases to ensure that they are maintained consistently. FILES
/var/adm/utmpx user access and adminstration information /var/adm/wtmpx history of user access and adminstrative information SEE ALSO
getutxent(3C), wait(3C)wait.h(3HEAD) SunOS 5.10 22 Feb 1999 utmpx(4)
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